Math based Astronomy Textbook?

I am taking an astronomy course at my university which is heavily math based since I am in a Science program. They ask us a lot of math based questions on assignments but don’t give us a lot of math based questions to do. Do you know of any good math based astronomy textbook or book (preferably not too expensive)... show more I am taking an astronomy course at my university which is heavily math based since I am in a Science program. They ask us a lot of math based questions on assignments but don’t give us a lot of math based questions to do. Do you know of any good math based astronomy textbook or book (preferably not too expensive) that I could use to practice with and that come with answers? I am finding lots of textbooks online but it is hard to determine what questions they ask since they don’t usually give you any previews of the books. Questions should include:

-Orbital radius
-Angular diameter
-Orbital period and semi major axis
-Blackbody radiation
-Light based questions such as wavelength
-Orbital speeds and escape velocities
-Star brightness
-etc

Thanks in advance for the help!
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